Aircraft contrails in Perth

[spudwa]

Saw the remnants of a contrail in Perth this morning (16th June) at 7:10AM Only second I've ever seen. Anyway of finding out who it was? Seemed to be flying North or South

 

[medhead]

Flightradar24.com

A few candidates, perhaps an airasia A330 that departed at 7:02 am for KUL

 

[spudwa]

We never see contrails from planes landing or departing, only from planes overflying

 

[medhead]

We never see contrails from planes landing or departing, only from planes overflying

It all depends on the atmospheric conditions. Was there inversion conditions with a low boundary? Your description is rather vague. Estimates of height, distance from Perth, length of contrail? Sounds like it was North/south. Horizon to horizon or only half the sky. Could an aircraft have got to sufficient altitude to then form a contrail while flying to the north?

Anyway have a look at flight radar between 11pm and midnight on 15 June. See if there are any candidates.

 

[kalboy]

Thai airways dreamliner ?

 

[medhead]

Thai airways dreamliner ?

That's a good one.

 

[RooFlyer]

Thai airways dreamliner ?

If the contrail was aligned north/south as described, where might the flight's origin / destination be?

 

[mannej]

I wouldn't have thought a plane departing PER would give the contrails. Generally it is the high over flyers from the Middle East to MEL/SYD that give you the contrails.

However there seems to be a VA F100 at about 30k feet at exactly 7:10 this morning

 

[medhead]

If the contrail was aligned north/south as described, where might the flight's origin / destination be?

There are multiple candidates. Singapore, air Asia and the Thai flight all heading north or south. There are also about a dozen flights heading north to outer WA at that time.

I wouldn't have thought a plane departing PER would give the contrails. Generally it is the high over flyers from the Middle East to MEL/SYD that give you the contrails.

However there seems to be a VA F100 at about 30k feet at exactly 7:10 this morning

View attachment 50606View attachment 50607

It all depends on the atmosphere. I've seen contrails coming from the wings when on approach to ADL over the other suburbs. Agreed that it's unlikely for a departing flight; hence the Thai flight being a good candidate. But if there was an inversion conditions with a relatively low boundary it is not impossible that a take off could get into the right conditions pretty quickly.

Also note the OP said it was pretty dispersed at 7:10. I'd think an earlier flight

 

[RooFlyer]

There are multiple candidates. Singapore, air Asia and the Thai flight all heading north or south. There are also about a dozen flights heading north to outer WA at that time.
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I got the impression that the contrails were high in the sky above Perth, hence the question. If it was a flight leaving from Perth, the question doesn't make much sense to me.

 

[spudwa]

Ok I've checked on google maps and the angle to Albany H'Way (Cannington) would suggest NNE/SSW. There were two sections running from just past overhead to to about my 3 o'clock. They were definitely high up and dispersed enough to suggest they had been there for several minutes. The last contrail that caught my attention several years ago was N-S as well which was why I noticed it. E-W would be fairly easy to explain

 

[medhead]

Ok I've checked on google maps and the angle to Albany H'Way (Cannington) would suggest NNE/SSW. There were two sections running from just past overhead to to about my 3 o'clock. They were definitely high up and dispersed enough to suggest they had been there for several minutes. The last contrail that caught my attention several years ago was N-S as well which was why I noticed it. E-W would be fairly easy to explain

What distance from the perth cab/airport to your location? Where is your location? Horizon to horizon or just on one side compared to the city? The thai plane would've been from the NNE, but on the north side of the airport.

 

[clazman]

I also saw the contrail I would have said it was 5klm east of the airport ,

 

[spudwa]

Saw it again yesterday 4/8 at 7:05 and as I was in the car so I pulled over and whipped out flightaware. It was Virgin 9223 from Busselton at 30,000 heading to some FIFO place I assume

 

[mannej]

Saw it again yesterday 4/8 at 7:05 and as I was in the car so I pulled over and whipped out flightaware. It was Virgin 9223 from Busselton at 30,000 heading to some FIFO place I assume

Fancy that - I suppose my guess last time wasn't that far off

 

[Daver6]

Happened to just notice this thread about two hours ago. Then, getting home today I notice this contrail which I'd never noticed before (they are rare in Perth). Heading south over the western suburbs at 4:36pm on 5/8/15. Jumped on flightradar24.com but couldn't see any aircraft in the vicinity. Any thoughts?

 

[clazman]

Saw the same con trails, running East / West over the southern suburbs

 

[jb747]

There are multiple candidates. Singapore, air Asia and the Thai flight all heading north or south. There are also about a dozen flights heading north to outer WA at that time.

It's unlikely that a departure from Perth is going to be high enough to start contrailling whilst still over Perth suburbia. You generally need a temperature in the region of -35ºC or less.

It all depends on the atmosphere. I've seen contrails coming from the wings when on approach to ADL over the other suburbs.

From the wings...they aren't contrails. That's the moisture condensing in the low pressure areas. Different mechanism. They disappear almost instantly. Look up 'condensation over wings' in google and you'll find lots of images. Some quite spectacular.

 

[medhead]

It's unlikely that a departure from Perth is going to be high enough to start contrailling whilst still over Perth suburbia. You generally need a temperature in the region of -35ºC or less.



From the wings...they aren't contrails. That's the moisture condensing in the low pressure areas. Different mechanism. They disappear almost instantly. Look up 'condensation over wings' in google and you'll find lots of images. Some quite spectacular.

It would all depend on angle of view, length of visibility. Pretty sure my post also asked about viewing details.

Condensation all looks the same regardless of source. But thanks for picking up the technicality